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The IT specialists apologised _______ being late because of the heavy traffic.

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He's always boasting _______ the one time he was on TV!

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My husband specializes _______ computer software.

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The course in this school appeals _______ me the most.

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Drinking water can become _______ by industrial waste, so it's crucial to support clean water initiatives.

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Investing in renewable energy may seem costly at first, but in the long _______, it will save money and protect the environment.

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Conserving water is crucial, _______ is something we should all be mindful of in our daily routines.

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Creating a _______ bin at home is an easy way to turn kitchen scraps into valuable fertilizer for your garden.